Nocturnal clear-sky directional downwelling infrared temperature measurements in a forest canopy

Matthew P. Wilson; Manuel Nunez

doi:10.1117/12.413856

31 January 2001 Nocturnal clear-sky directional downwelling infrared temperature measurements in a forest canopy

Matthew P. Wilson, Manuel Nunez

Proceedings Volume 4168, Remote Sensing of Clouds and the Atmosphere V; (2001) https://doi.org/10.1117/12.413856
Event: Europto Remote Sensing, 2000, Barcelona, Spain

Abstract

Presented is a ground-based measurement technique for quantifying the directional properties of the IR radiation regime within a forest canopy with regard to mapping the canopy transmission over the upwards facing hemisphere. Implications are discussed for remotely sensed canopy temperature measurements and models of canopy transmission. The technique involves taking narrowband measurement scans throughout the hemisphere using a narrow view angle, narrow spectral band radiometer that measures predominantly within the water vapor transmission window. Measurements made under both clear skies and within a dry sclerophyll Eucalyptus canopy are presented and discussed.

Citation Download Citation

Matthew P. Wilson and Manuel Nunez "Nocturnal clear-sky directional downwelling infrared temperature measurements in a forest canopy", Proc. SPIE 4168, Remote Sensing of Clouds and the Atmosphere V, (31 January 2001); https://doi.org/10.1117/12.413856

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